The auto defogging sensor is installed on the front window glass. The sensor
judges and sends signal if moisture occurs to blow out wind for defogging. The
air conditioner control module receives signal from the sensor and restrains
moisture and eliminate defog by controlling the intake actuator, A/C, auto defogging
actuator, blower motor rpm, mode actuator.

Other information:

Kia Cee'd Owners Manual: If you do decide to pull a trailer
Here are some important points if you decide to pull a trailer:
Consider using a sway control.You can ask a hitch dealer about sway
control.
Do not do any towing with your car during its first 2,000 km (1,200
miles) in order to allow the engine to properly break in. Failure
to heed th ...

Kia Cee'd Owners Manual: Adaptive Front Lighting System
(AFLS)
Adaptive front lighting system uses the
steering angle and vehicle speed, to
keep your field of vision wide by swiveling
and leveling the headlamp.
Change the switch to the AUTO position
when the engine is running. The adaptive
front lighting system will operate when
the headlamp is O ...